CN211229114U

CN211229114U - Plug-in type close-splicing laminated floor slab

Info

Publication number: CN211229114U
Application number: CN201921816746.4U
Authority: CN
Inventors: 杨奉源; 李彬; 赵小文; 詹岳松; 张杰柯
Original assignee: Sichuan Railway Sleeper And Bridge Engineering Co ltd
Current assignee: Sichuan Railway Sleeper And Bridge Engineering Co ltd
Priority date: 2019-10-25
Filing date: 2019-10-25
Publication date: 2020-08-11
Anticipated expiration: 2029-10-25

Abstract

The utility model provides a bayonet close amalgamation lamination floor relates to assembly type structure technical field, and it includes left board and right board, and left board and right board all include prefabricated bottom plate layer and lie in the post-cast laminated layer of prefabricated bottom plate layer top and down, the upper end is absorbed in respectively prefabricated bottom plate layer and post-cast joint bar in the laminated layer. A first steel plate is embedded in the prefabricated bottom plate layer of the left plate, a first inserting portion and a second inserting portion are symmetrically arranged at one end, close to the splicing face, of the first steel plate, and a second steel plate and a third steel plate, which are respectively provided with the first inserting portion and the second inserting portion, are symmetrically embedded in the prefabricated bottom plate layer of the right plate. The problem of insert type close piece together the coincide floor when amalgamation construct the degree of difficulty big, easy dislocation in prior art is solved.

Description

Plug-in type close-splicing laminated floor slab

Technical Field

The utility model relates to an assembly type structure technical field especially relates to a bayonet close amalgamation superimposed floor.

Background

The fabricated building can greatly improve the construction rate, shorten the construction period, reduce the restriction of climate conditions, and achieve the purposes of energy conservation, emission reduction and environmental protection, so that the fabricated building is widely applied. The technology of the concrete laminated floor slab is that the floor slab is divided into two parts along the thickness direction, the bottom part is a prefabricated bottom plate, and the upper part is post-cast with a concrete laminated layer. The prefabricated bottom plate with the bottom steel bars is used as a part of a floor slab, is used as a template of a post-cast concrete superposed layer to bear load in the construction stage, and forms an integral superposed concrete member with the post-cast concrete layer. The concrete composite floor slab is divided into a unidirectional stressed laminated slab and a bidirectional stressed laminated slab according to the specific stressed state. The patchwork can be divided into a separate type seam (i.e. a 'close-spliced' seam in which the bottom plates are not pulled apart) and an integral type seam (i.e. a post-cast concrete strip is arranged between the bottom plates) according to the connection mode. Generally, the unidirectional sheets employ a split seam and the bidirectional sheets employ an integral seam.

The existing connection of the plug-in type close-splicing laminated floor slab mainly adopts a one-way plate separation type seam technology, the one-way plates in the technology are provided with ribs in the direction of stressed ribs, the ribs cannot be provided in the direction of distributed ribs, a seam of 5-10mm is reserved between the two one-way plates, and additional steel bars with the same diameter as the distributed steel bars are placed on the surfaces of prefabricated plates to ensure the continuity of the steel bars. The main problems of this connection are as follows:

(1) the construction degree of difficulty is big during the amalgamation, and the seam position of disconnect-type seam appears the crack easily, though not influencing structure safety, but seriously influences owner's use and experience.

(2) Because the production error of the one-way plate or the construction error during the connection between two adjacent one-way plates can cause the height difference between the two one-way plates, the impression effect of the floor slab is seriously influenced, the difficulty of subsequent decoration construction is increased, and the decoration effect is influenced.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned problem among the prior art, the utility model provides a close amalgamation superimposed floor of bayonet has solved the problem that the close amalgamation superimposed floor of the bayonet construction degree of difficulty is big, misplace easily when amalgamation in the prior art.

In order to achieve the purpose of the invention, the technical scheme adopted by the utility model is as follows:

the utility model provides a close amalgamation of bayonet lamination floor, it includes left board and right board, and left board and right board all include prefabricated bottom plate layer and lie in the post-cast laminated layer of prefabricated bottom plate layer top and down, the upper end is absorbed in the connecting reinforcement in prefabricated bottom plate layer and the post-cast laminated layer respectively. A first steel plate is embedded in the prefabricated bottom plate layer of the left plate, a first inserting portion and a second inserting portion are symmetrically arranged at one end, close to the splicing face, of the first steel plate, and a second steel plate and a third steel plate, which are respectively provided with the first inserting portion and the second inserting portion, are symmetrically embedded in the prefabricated bottom plate layer of the right plate.

Furthermore, first grafting portion and second grafting portion integrated into one piece are in the both sides of connecting plate, and the connecting plate extends to the one end of keeping away from piece together seam face.

Further, second steel sheet and third steel sheet structure are the same and set up side by side, all are provided with the extension in the one end of second steel sheet and the adjacent piece face of third steel sheet, are provided with on the top surface of extension and supply first grafting portion or second grafting portion male bar groove.

Furthermore, the first steel plate is arranged above the second steel plate and the third steel plate, and the right plate is reserved with a mortar groove below the second steel plate and the third steel plate.

Furthermore, one end of the left plate, which is adjacent to the joint surface, is provided with a T-shaped groove for the insertion of the extending part and the extension of the mortar groove.

Further, the depth of the connecting steel bars sunk into the prefabricated floor slab or the post-cast laminated layer is not less than one-half layer thickness of the corresponding layer, so that the left plate and the right plate have enough strength.

Furthermore, the connecting steel bars are in sine wave shapes and are symmetrically distributed relative to the top surface of the prefabricated floor layer in the vertical direction.

Furthermore, reinforcing steel bars are uniformly distributed in the prefabricated bottom plate layer and the post-cast superposed layer of the left plate and the right plate.

The utility model has the advantages that: through pre-buried first steel sheet, second steel sheet and third steel sheet respectively in the piece face department of left side board and right side board, set up the first grafting portion and the second grafting portion of symmetry on first steel sheet, during second steel sheet and the third steel sheet in first grafting portion and the second grafting portion can insert the right side board for can assemble fast when left side board and the concatenation of right side board and put in place, can reduce and assemble the degree of difficulty, improve the concatenation precision, improve the efficiency of construction greatly.

The concatenation of the fixed left board of grafting effect through first steel sheet and second steel sheet and third steel sheet and right board, make in field construction, need not to stay and establish the post-cast strip, the work of having reduced on-the-spot post-cast strip formwork and erect the support, promote the convenience and the efficiency of site operation, and during the concatenation, the smooth steel sheet in surface is changeed in the alignment, the efficiency of construction is higher, be difficult to produce the difference in height, and the reinforcing effect of steel sheet has been had, make the intensity of coincide floor connection better, be difficult to produce defects such as crack, construction quality is improved, make its application more extensive.

Drawings

Fig. 1 is a schematic structural diagram of an inserted close-fitting laminated floor slab.

Fig. 2 is an enlarged view of a point a in fig. 1.

Fig. 3 is a top view of fig. 2.

Fig. 4 is a schematic structural view of the left plate.

Fig. 5 is a schematic structural view of the right plate.

Wherein, 1, a left plate; 11. prefabricating a bottom plate layer; 12. post-pouring a superposed layer; 13. connecting reinforcing steel bars; 14. a first steel plate; 141. a first insertion part; 142. a second insertion part; 143. a connecting plate; 15. a T-shaped groove; 16. Reinforcing steel bars; 2. a right plate; 21. splicing and sewing the surfaces; 22. a second steel plate; 221. an extension portion; 222. a strip-shaped groove; 23. a third steel plate; 24. and (4) a mortar groove.

Detailed Description

The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and various changes will be apparent to those skilled in the art as long as they are within the spirit and scope of the present invention as defined and defined by the appended claims, and all inventions contemplated by the present invention are protected.

As shown in fig. 1, the inserted close-fitting overlapped floor slab comprises a left plate 1 and a right plate 2 which are mutually fitted, and the right end surface of the left plate 1 and the left end surface of the right plate 2 are joint surfaces 21. The left plate 1 and the right plate 2 both comprise a prefabricated bottom plate layer 11, a post-cast laminated layer 12 positioned above the prefabricated bottom plate layer 11, and connecting steel bars 13 with lower and upper ends respectively sunk into the prefabricated bottom plate layer 11 and the post-cast laminated layer 12. The depth of the connecting reinforcement 13 into the prefabricated floor layer 11 or the post-cast laminated layer 12 is not less than one-half of the layer thickness of the corresponding layer. The connecting steel bars 13 are in a sine wave shape and are symmetrically distributed relative to the top surface of the prefabricated floor layer 11 in the vertical direction. Reinforcing steel bars 16 are distributed in the prefabricated bottom plate layer 11 and the post-cast laminated layer 12 of the left plate 1 and the right plate 2.

As shown in fig. 2 and 3, the prefabricated floor layer 11 of the left panel 1 has a first steel plate 14 embedded therein, and the first steel plate 14 is disposed adjacent to the patchwork surface 21. The first steel plate 14 is symmetrically provided with a first inserting portion 141 and a second inserting portion 142 at one end adjacent to the joint face 21, the first inserting portion 141 and the second inserting portion 142 are integrally formed at two sides of the connecting plate 143, the connecting plate 143 extends towards one end far away from the joint face 21, namely the first inserting portion 141, the second inserting portion 142 and the connecting plate 143 form a T shape, and right end faces of the first inserting portion 141 and the second inserting portion 142 are flush with the joint face 21.

The prefabricated floor layer 11 of the right plate 2 is embedded with a second steel plate 22 and a third steel plate 23 into which the first inserting portion 141 and the second inserting portion 142 are respectively inserted. The second steel plate 22 and the third steel plate 23 have the same structure and are arranged side by side, the ends of the second steel plate 22 and the third steel plate 23 adjacent to the joint surface 21 are both provided with an extending portion 221, and the top surface of the extending portion 221 is provided with a strip-shaped groove 222 for inserting the first inserting portion 141 or the second inserting portion 142, as shown in fig. 5.

As shown in fig. 2, the first steel plate 14 is located above the second steel plate 22 and the third steel plate 23, and the right plate 2 is reserved with a mortar groove 24 below the second steel plate 22 and the third steel plate 23. As shown in fig. 4, one end of the left plate 1 adjacent to the joint face 21 is provided with a T-shaped groove 15 for the insertion of the extending portion 221 and the extension of the mortar groove 24, the T-shaped groove 15 is reserved on the left plate 1 to accommodate the insertion of the extending portion 221 on the second steel plate 22 and the third steel plate 23, and the extending portion 221 can extend into the lower portion of the left plate 1, so that the joint face 21 of the left plate 1 and the right plate 2 can be attached more tightly, and the joint quality is increased.

In the in-service use process, can set up the structure of a plurality of first steel sheets 14 that can peg graft, second steel sheet 22 and third steel sheet 23 along piece face 21 interval according to the length of piece face 21, increase the splicing precision of left board 1 and right board 2 and the fastness of being connected.

When the composite floor slab in this scheme of adoption carries out construction, at first this composite floor slab transports the construction site from prefabricated mill, adopt lifting device to fix a position the composite floor slab and hoist, place right board 2 in advance in the specified area, then hoist and mount left board 1, transfer left board 1 from next-door neighbour right board 2 department, make first grafting portion 141 and second grafting portion 142 on the first steel sheet 14 insert in the bar groove 222 in second steel sheet 22 and the third steel sheet 23, the right-hand member face of the prefabricated floor slab layer 11 of left board 1 pastes tightly with the left end face of the prefabricated floor slab layer 11 of right board 2, and the position of adjusting left board 1 makes left board 1 align completely with right board 2, then fill the mortar into mortar groove 23, the mortar is shown in fig. 2 after the completion, then pour back pouring laminating layer 12.

Claims

1. The plug-in type close-spliced overlapped floor slab is characterized by comprising a left plate (1) and a right plate (2), wherein each of the left plate (1) and the right plate (2) comprises a prefabricated bottom plate layer (11), a post-cast overlapped layer (12) positioned above the prefabricated bottom plate layer (11) and connecting steel bars (13) with the lower ends and the upper ends respectively sunk into the prefabricated bottom plate layer (11) and the post-cast overlapped layer (12);

the prefabricated floor slab comprises a left plate (1), wherein a prefabricated floor slab layer (11) is embedded with a first steel plate (14), one end of the first steel plate (14) close to a splicing surface (21) is symmetrically provided with a first splicing part (141) and a second splicing part (142), and a prefabricated floor slab layer (11) of a right plate (2) is embedded with a second steel plate (22) and a third steel plate (23) which are respectively provided with the first splicing part (141) and the second splicing part (142) in a symmetrical mode.

2. The inserted close-coupled and overlapped floor slab as claimed in claim 1, wherein the first inserting portion (141) and the second inserting portion (142) are integrally formed at both sides of a connecting plate (143), and the connecting plate (143) extends to an end away from the joint face (21).

3. The plug-in type close-splicing overlapped floor slab as claimed in claim 1 or 2, wherein the second steel plate (22) and the third steel plate (23) are identical in structure and are arranged side by side, an extension part (221) is arranged at one end of each of the second steel plate (22) and the third steel plate (23) adjacent to the splicing face (21), and a strip-shaped groove (222) for the first splicing part (141) or the second splicing part (142) to be inserted is arranged on the top surface of the extension part (221).

4. The drop-in tight-fit laminated floor slab according to claim 3, wherein the first steel plate (14) is located above the second and third steel plates (22, 23), and the right plate (2) is reserved with a mortar groove (24) below the second and third steel plates (22, 23).

5. The inserted close-packed floor slab according to claim 4, characterized in that one end of the left plate (1) adjacent to the joint face (21) is provided with a T-shaped groove (15) into which the extension (221) is inserted and into which the mortar groove (24) extends.

6. The insertable close-fit laminated floor slab according to claim 1, characterized in that the depth of the connecting reinforcement (13) sunk into the prefabricated floor layer (11) or the post-cast laminated layer (12) is not less than half the layer thickness of the corresponding layer.

7. The drop-in type close-packed floor slab according to claim 1 or 6, characterized in that the connecting reinforcement (13) has a sine wave shape and is symmetrically distributed in a vertical direction with respect to the top surface of the prefabricated floor layer (11).

8. The drop-in close-fitting composite floor according to claim 1, characterized in that the prefabricated floor layers (11) and the post-cast laminate layers (12) of the left and right panels (1, 2) are distributed with reinforcing steel bars (16) all around.